Oxford dictionaries website, July 9, 2014 (poetry: Literary work in which special intensity is given to the expression of feelings and ideas by the use of distinctive style and rhythm; poems collectively or as a genre of literature. Synonyms: poems, verse, versification, metrical composition, rhymes, balladry, archaic: poesy)

Merriam-Webster online, July 18, 2014 (rhyme 1: a (1) : rhyming verse (2) : poetry. b : a composition in verse that rhymes. Variant: rime)

De Vries, L.P. The nature of poetic literature, 1930.

Puttenham, G. The art of English poesy, 2007.

Sidney, P. The defence of poesie, 1908.

Cameron, G.F. Lyrics on freedom, love and death, ©1973: p. v ("George Frederick Cameron, the author of the following poems")